Desperate to clean up, the accused tried to remove Grace's blood from the bedroom carpet, jurors were told. But tests revealed traces at the flat in Auckland, New Zealand, where the 22-year-old British backpacker died. Blood found on the fridge was almost certainly from Grace rather than anyone else, the court heard.
The 27-year-old defendant, who cannot be named for legal reasons, is accused of strangling Grace during what he claims was a "rough sex" session at his flat in December last year. He later stuffed her body in a suitcase and dumped it in a shallow grave in hills west of Auckland, it is claimed. The defendant denies murder and insists Grace died by accident during the consensual love making, which involved hitting, biting and choking.
Grace's parents David and Gillian, of Wickford, Essex, were in Auckland High Court as forensic expert Dianne Crenfeldt said she found two roughly circular blood stains on the carpet between the bed and the wardrobe.
Tests using the chemical luminol showed traces of blood as well as the presence of cleaning fluids, she said.
Luminol also revealed how someone with blood on their feet had walked around the room, said Ms Crenfeldt.